The bolt at the captive nuts for the inner bolts can sometimes come away from the sub frame. This makes the job more complex as I think the rear sub frame then requires removal. I cannot recall if on the upper or lower arm I had the bolt at the hub seize in place and this required removing the trailing arm I think to have a new bush inserted.
FWIW, the upper arms are a DIY job so not too complex
Hope for the bet, expect the worst.
macafee2
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